US5128978A - Film holder for autoradiographic imaging - Google Patents

Film holder for autoradiographic imaging Download PDF

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Publication number
US5128978A
US5128978A US07/763,344 US76334491A US5128978A US 5128978 A US5128978 A US 5128978A US 76334491 A US76334491 A US 76334491A US 5128978 A US5128978 A US 5128978A
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US
United States
Prior art keywords
film
cassette
housing
panel
specimen
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US07/763,344
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English (en)
Inventor
Peter H. Roth
Frederick Slavitter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Intellectual Ventures I LLC
Original Assignee
Polaroid Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Polaroid Corp filed Critical Polaroid Corp
Priority to US07/763,344 priority Critical patent/US5128978A/en
Assigned to POLAROID CORPORATION A CORPORATION OF DE reassignment POLAROID CORPORATION A CORPORATION OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ROTH, PETER H., SLAVITTER, FREDERICK
Priority to CA002061452A priority patent/CA2061452A1/en
Priority to EP92104997A priority patent/EP0532828B1/en
Priority to DE69219044T priority patent/DE69219044T2/de
Priority to JP4094538A priority patent/JP2500171B2/ja
Application granted granted Critical
Publication of US5128978A publication Critical patent/US5128978A/en
Assigned to MORGAN GUARANTY TRUST COMPANY OF NEW YORK reassignment MORGAN GUARANTY TRUST COMPANY OF NEW YORK SECURITY AGREEMENT Assignors: POLAROID CORPORATION
Assigned to OEP IMAGINIG OPERATING CORPORATION reassignment OEP IMAGINIG OPERATING CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: POLAROID CORPORATION
Assigned to POLAROID CORPORATION reassignment POLAROID CORPORATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: OEP IMAGING OPERATING CORPORATION
Assigned to WILMINGTON TRUST COMPANY, AS COLLATERAL AGENT reassignment WILMINGTON TRUST COMPANY, AS COLLATERAL AGENT SECURITY AGREEMENT Assignors: PETTERS CONSUMER BRANDS INTERNATIONAL, LLC, PETTERS CONSUMER BRANDS, LLC, POLAROID ASIA PACIFIC LLC, POLAROID CAPITAL LLC, POLAROID CORPORATION, POLAROID EYEWEAR I LLC, POLAROID INTERNATIONAL HOLDING LLC, POLAROID INVESTMENT LLC, POLAROID LATIN AMERICA I CORPORATION, POLAROID NEW BEDFORD REAL ESTATE LLC, POLAROID NORWOOD REAL ESTATE LLC, POLAROID WALTHAM REAL ESTATE LLC, POLAROLD HOLDING COMPANY, ZINK INCORPORATED
Assigned to JPMORGAN CHASE BANK,N.A,AS ADMINISTRATIVE AGENT reassignment JPMORGAN CHASE BANK,N.A,AS ADMINISTRATIVE AGENT SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PETTERS CONSUMER BRANDS INTERNATIONAL, LLC, PETTERS CONSUMER BRANDS, LLC, POLAROID ASIA PACIFIC LLC, POLAROID CAPITAL LLC, POLAROID CORPORATION, POLAROID EYEWEAR ILLC, POLAROID HOLDING COMPANY, POLAROID INTERNATIONAL HOLDING LLC, POLAROID INVESTMENT LLC, POLAROID LATIN AMERICA I CORPORATION, POLAROID NEW BEDFORD REAL ESTATE LLC, POLAROID NORWOOD REAL ESTATE LLC, POLAROID WALTHAM REAL ESTATE LLC, ZINK INCORPORATED
Assigned to POLAROID CORPORATION (F/K/A OEP IMAGING OPERATING COMPANY) reassignment POLAROID CORPORATION (F/K/A OEP IMAGING OPERATING COMPANY) U.S. BANKRUPTCY COURT DISTRICT OF DELAWARE ORDER AUTHORIZING RELEASE OF ALL LIENS Assignors: JPMORGAN CHASE BANK, N.A. (F/K/A MORGAN GUARANTY TRUST COMPANY OF NEW YORK)
Assigned to OEP IMAGING OPERATING CORPORATION reassignment OEP IMAGING OPERATING CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: POLAROID CORPORATION
Assigned to POLAROID CORPORATION (FMR OEP IMAGING OPERATING CORP.) reassignment POLAROID CORPORATION (FMR OEP IMAGING OPERATING CORP.) SUPPLEMENTAL ASSIGNMENT OF PATENTS Assignors: PRIMARY PDC, INC. (FMR POLAROID CORPORATION)
Assigned to POLAROID CAPITAL LLC, POLAROID EYEWEAR LLC, PETTERS CONSUMER BRANDS INTERNATIONAL, LLC, POLAROID NORWOOD REAL ESTATE LLC, POLAROID INVESTMENT LLC, PETTERS CONSUMER BRANDS, LLC, POLAROID WALTHAM REAL ESTATE LLC, POLAROID LATIN AMERICA I CORPORATION, POLAROID ASIA PACIFIC LLC, POLAROID CORPORATION, POLOROID INTERNATIONAL HOLDING LLC, POLAROID HOLDING COMPANY, POLAROID NEW BEDFORD REAL ESTATE LLC, ZINK INCORPORATED reassignment POLAROID CAPITAL LLC RELEASE OF SECURITY INTEREST IN PATENTS Assignors: WILMINGTON TRUST COMPANY
Assigned to PLLAROID EYEWEAR I LLC, POLAROID CAPITAL LLC, ZINK INCORPORATED, POLAROID NEW BEDFORD REAL ESTATE LLC, POLAROID CONSUMER ELECTRONICS INTERNATIONAL, LLC, (FORMERLY KNOWN AS PETTERS CONSUMER ELECTRONICS INTERNATIONAL, LLC), POLAROID HOLDING COMPANY, POLAROID CONSUMER ELECTRONICS, LLC, (FORMERLY KNOWN AS PETTERS CONSUMER ELECTRONICS, LLC), POLAROID CORPORATION, POLAROID NORWOOD REAL ESTATE LLC, POLAROID WALTHAM REAL ESTATE LLC, POLAROID INTERNATIONAL HOLDING LLC, POLAROID LATIN AMERICA I CORPORATION, POLAROID ASIA PACIFIC LLC, POLAROID INVESTMENT LLC reassignment PLLAROID EYEWEAR I LLC RELEASE OF SECURITY INTEREST IN PATENTS Assignors: JPMORGAN CHASE BANK, N.A.
Assigned to SENSHIN CAPITAL, LLC reassignment SENSHIN CAPITAL, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: POLAROID CORPORATION
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B42/00—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means
    • G03B42/02—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means using X-rays
    • G03B42/04—Holders for X-ray films

Definitions

  • This invention relates to large film cassettes for obtaining images on photosensitive film from radioactive or radiation emitting specimens and their use.
  • a film cassette designed to receive photosensitive film in a light protective envelope and maintain lighttight integrity while removing the protective envelope includes means for bringing a light emitting enhancer screen into intimate contact with the photosensitive film during exposure to x-ray photography. The back of the photosensitive film may be brought into intimate contact with a sheet of specimen-containing radioactive or radiation generating material.
  • the cassette preferably includes a light-enhancing screen or surface which has a layer of phosphors which emits visible light and ultraviolet light when exposed to radionucleotides including x-rays.
  • the photosensitive layer of the film unit is held in close and continuous contact with the phosphor layer so that the x-ray induced light of phosphors intensifies the image to be recorded on the film.
  • specimen sheets which have been provided with a radioactive material are presently inserted directly into film cassettes designed for x-ray photography. This operation is presently done in a darkroom to prevent fogging (partial exposure) of the x-ray film.
  • Such sheets may consist of the product of electrophoresis gel separation of cell tissues into varying molecular weights. The products of such separation are treated with radioactive isotopes or elements which have an affinity for the specimen (i.e. such as an affinity for DNA pairings). Such gels are transferred to a membrane and dried. Although the radiation level is low a desired photographic image may be obtained in an x-ray cassette.
  • the present invention proposes a manually portable cassette or film holder within which an audioradiographic generated image may be formed in a lighttight environment on a large format x-ray sensitive film.
  • a particularly useful holder for this purpose includes a housing having a base section and a cover section pivotally attached thereto which may be opened and closed like a book when connectors located along an edge of the cover section are manually engaged or disengaged.
  • the base section and cover section of the film holder collectively form a lighttight cavity or exposure chamber.
  • An intensifier screen is mounted within the film holder cover section with its radiation intensifying surface facing inwardly of the film holder. Manually depressing the external center portion of the cover section moves said center portion, and the intensifier screen supported thereon toward the closed film holder base section where it becomes latched in this depressed position. When so latched, a latch release member will move outwardly of one end of the film holder. The external center portion of the cover section may be unlatched, such that it returns to its original non-depressed position, by depressing the outwardly extending latch release member toward the housing cover section from which it projects.
  • the x-ray sensitive film is preferably in the form of a conventional self-developing film unit which includes, in part, a sheet of x-ray sensitive film enclosed within a removable light-excluding, opaque envelope.
  • the envelope enclosed film is placed within the film holder such that one end thereof is hooked over an extending tab attached to one end of an inner surface of the film holder base section and such that its photosensitive surface faces the intensifier screen when the film holder is in a closed condition.
  • the film-enclosing envelope may be withdrawn from one end thereof, without also withdrawing the film therefrom, because the above-noted tab maintains the film within the lighttight film holder as the envelope is being withdrawn.
  • the film holder base section additionally includes an access panel which allows for the placement of a custom made sheet of specimen-containing radioactive or radiation generating material in contact with the non-photosensitive surface of the film without subsequently damaging said specimen-containing sheet of material.
  • the envelope enclosing the x-ray film must be removed therefrom so that a specimen image can be transferred thereto. If the specimen-containing sheet is placed on top of the envelope and the envelope is subsequently removed from the enclosed x-ray film, the specimen-containing sheet may be damaged by the frictional forces that are produced therebetween during the envelope removal process.
  • the film cassette of the present invention is constructed such that the opaque envelope enclosing the x-ray film may be removed therefrom without exposing a photosensitive surface thereof to ambient light when the cassette access panel is subsequently opened in ambient light for placement of the specimen-containing sheet material against the non-photosensitive surface of the x-ray film.
  • the access panel in the base section is latched or unlatched by sliding a pair of cammed metal rails, located along opposite sides of the film holder in one direction or another.
  • the above-mentioned center portion of the housing cover section is depressed and is automatically latched in its depressed position, as explained above, to thereby place the x-ray sensitive surface of the film in pressing intimate contact with the intensifier screen and the sheet of specimen-containing material in pressing intimate contact with the opposite or non-photosensitive surface of said x-ray sensitive film.
  • the radioactive material is the sole source of the energy which is employed to form an image of the specimen on the x-ray film in a period of time that may take anywhere from minutes to days.
  • X-rays or high energy electrons from the radioactive material pass through the nonsensitive surface of the film, cause image-containing visible light to be emitted by the intensifier screen and are then reflected back onto the sensitive surface of the film where a specimen image is ultimately formed.
  • Some specimen images must be formed in the cassette at extremely low temperatures, such as at a temperature of -80 degrees centigrade, in order to eliminate normal loss due to low intensity reciprocity failure. Exposure to such temperatures will cause cassette dimensions to change and if all cassette dimensions do not change equally, the cassette may bend or fracture to the point where ambient light may enter the cassette, fog the enclosed film and thereby render the film useless. If the entire cassette is made from the same material, all of the cassette dimensions will change by the same amount so that no cassette bending or cracking will result. However, if as in the cassette of the present invention the components parts thereof are made from different materials, cassette bending or cracking that would otherwise occur is presented by employing cassette materials having more or less the same coefficient of thermal expansion.
  • certain inner components are formed of steel and certain outer components are formed of a thermoplastic reinforced resin having a coefficient of thermal expansion approximately equal to that of steel, a resin which is sold by General Electric Company of Pittsfield, Mass. under their registered trademark Valox 9335.
  • the radioactive sheet material When exposure is complete, the radioactive sheet material is removed and then the film holder is placed in a conventional processor where the exposed negative is mated with a positive sheet having a pod of developer liquid attached thereto wherein self-developing processing is initiated. After the developing process is complete, the positive and negative sheets are peeled apart, thereby leaving a visible image on the positive sheet.
  • FIG. 1 is a perspective view of a cassette embodying the instant invention, shown in its open position, showing a film unit for use therein and a specimen sheet for imaging thereon;
  • FIG. 2 is a bottom plan view of the cassette showing the access panel covering the access window and with a film assembly positioned therein;
  • FIG. 3 is a top plan view of the cassette showing the pressure panel in its unlatched position and with the protective envelope of the film assembly removed;
  • FIG. 4 is a cross sectional view of the cassette as seen along the line 4--4 of FIG. 3 except showing the pressure panel in its depressed and latched position.
  • cassette 10 comprises a housing consisting of a base section 14 and a cover section 16. These two sections are generally rectangular in shape and are hinged together along one edge of each section as shown by hinges 18 so that the sections 14 and 16 may open and close to receive film assemblies such as film assembly 20.
  • Film assembly 20 consists of an opaque envelope 22 containing a photographic film 21.
  • Film assembly 20 is positioned in the base section 14 so that the side edges 24 of an envelope 22 and the film 21 within are seated on base sealing surfaces 26 which are a sponge rubber supported thermoplastic reinforced resin sheet. These sealing surfaces extend around the periphery of a window or opening 23 in the bottom of the base section 14 and serve to seal the assembly from light penetration as will be more fully explained hereinbelow.
  • Tab 30 of film assembly 20 is an integral part of film 21 and folds inwardly over a rigid tab extending within base 14 (not shown).
  • Cover section 16 is comprised of an externally and centrally positioned pressure plate 32 (see FIGS. 3 and 4) which is disposed to more inwardly or outwardly against a resilient rubber foam pad 36 and spring members 37 attached to the surfaces 39 of section 16 (see FIGS. 3 and 4).
  • Light enhancing screen 34 mounted adjacent pressure plate 32 faces inwardly so as to face film assembly 20 and more importantly film 21 within the assembly after the envelope 22 is removed so that pushing against pressure plate 32 urges light enhancing screen 34 inwardly against film 21.
  • Pressure plate 32 is latched or locked in its depressed position by tabs 40 which are an integral part of rods 42 that extend along either side of section 16 to a release bar 46 at one end.
  • Bar 46 and rods 42 are spring biased by springs 44 to urge such rods in the direction of the attached latch release bar 46, thereby causing the bar to be extended beyond the section 16 with the springs in a relatively relaxed position.
  • tabs 40 extend into matching notches 48 formed in the sides of the plate 32. In this position springs 44 urge bar 46, rods 42 and tabs 40 in the direction of the bar 46 but are restrained by the sides of the notches 48.
  • plate 32 when plate 32 is depressed or pushed down, springs 44 and rods 42 cause the tabs 40 to extend above and beyond the notches 48 and effectively latch the plate 32 in its down or depressed position (see in particular FIG. 3 which shows plate 32 in a non-depressed position and the depressed position in dotted outline).
  • Such plate 32 may be unlatched to return to its non-depressed position by simply pushing bar 46 in an inward direction to effect a matching of tabs 40 with notches 48.
  • thermoplastic reinforced resin sheet 50 is attached to foam pad 36 and extends beyond the pad to the periphery of section 16 to act as a light sealing surface which extends around the periphery of section 16 and seals the cassette from light penetration in cooperation with the sealing surfaces 26 of section 14.
  • Light enhancing screen 34 is attached to the sheet 50 but is of a size to generally match film 21.
  • Base section 14 of the cassette 10 normally is provided with an integral cover but in the cassette of the present invention a rectangular access opening or window 23 opens into the cassette.
  • An access panel 51 is formed with an inner extended surface 52, that is of substantially the same dimensions as the window 23, and an outer surface 56, the sides and one end of which extend beyond the surface dimensions of window 23.
  • surface 52 protects within window 23 while the edges 58 of surface 56 seat on the sides 57 of section 14.
  • a thermoplastic reinforced resin sheet 53 covers the inner surface of surface 52 to provide a suitable surface to contact film 21 and/or the specimen sheet 76.
  • the leading edge of surface 52 of panel 51 which extends beyond the surface 56 may be attached to section 14 by a hinge (shown at 62, in FIG. 2) in which even the panel 51 is pivotally opened or closed.
  • Elongated rails 64 are positioned on either side of and parallel to window 28. Such rails are provided with angled elongated slots 66. The slots of each rail are similarly angled. Four cam members 68 attached to the surface of section 14 extend through the slots 66. After positioning panel 51 in window 23 as herein described such panel may be secured to section 14 bu pushing rails 64 in the direction away from hinge 62, to the left as shown in FIG. 2, in which event the rails extend over panel 51 to both firmly attach it to the section 14 and to seal window 28 against light.
  • Sections 14 and 16 are provided with attachment latches 70 and 72 which serve to secure the members when the assembly is closed.
  • Felt pads such as those shown at 74 may be provided to assist the sealing of the assembly from light penetration when the assembly is closed.
  • the assembly is opened as shown in FIG. 1 (although panel 51 will be normally secured to enclose window 23).
  • Film assembly 20 is inserted so that edge 29 of the protecting envelope 22 extends beyond the cassette to the left as shown in FIG. 2 but the film 21 is totally within the cassette with its edges all extending over the surrounding sealing surfaces.
  • Tab 30 of the film 21 is crimped over a corresponding fixed tab (not shown) attached to section 14.
  • the cassette is then closed and latched with latches 70 and 72.
  • the assembly is now lighttight because of the sealing effects of the thermoplastic reinforced resin sealing surfaces 26 and 50 and felt pads 74.
  • the protecting envelope 22 is extracted by pulling on the edge 29 which extends beyond the edge of the closed cassette, the thermoplastic reinforced resin sealing surfaces 26 and 50 and felt pads 74 maintaining light integrity.
  • Tab 30 causes the film 21 to be retained in the cassette as the envelope 22 is removed.
  • the panel 51 may now be removed because the photosensitive side of film 21 is facing the surface of intensifying screen 34.
  • the bottom surface of film 21 is opaque so that light impinging thereon may not further penetrate the cassette.
  • the thermoplastic reinforced resin sealing surfaces 26 and 50 prevent light impingement from around film 21. It may be desirable to depress the pressure panel 32 into its latching position before opening panel 51 since such added pressure may enhance the sealing effects of the thermoplastic reinforced resin and felt pad seals.
  • a sheet such as the audioradiographic specimen sheets described above and shown as 76 (see FIGS. 1 and 4) may be inserted into the accessed area of the back or non-photosensitive side of the film 21.
  • the panel 51 is now preferably replaced to form the assembly as shown by FIG. 4.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radiography Using Non-Light Waves (AREA)
  • Conversion Of X-Rays Into Visible Images (AREA)
  • Measurement Of Radiation (AREA)
US07/763,344 1991-09-20 1991-09-20 Film holder for autoradiographic imaging Expired - Lifetime US5128978A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US07/763,344 US5128978A (en) 1991-09-20 1991-09-20 Film holder for autoradiographic imaging
CA002061452A CA2061452A1 (en) 1991-09-20 1992-02-18 Film holder for autoradiographic imaging
EP92104997A EP0532828B1 (en) 1991-09-20 1992-03-23 Film holder for autoradiographic imaging
DE69219044T DE69219044T2 (de) 1991-09-20 1992-03-23 Filmhalter für autoradiographische Aufzeichnung
JP4094538A JP2500171B2 (ja) 1991-09-20 1992-04-14 放射線写真撮影用フィルム保持カセット

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/763,344 US5128978A (en) 1991-09-20 1991-09-20 Film holder for autoradiographic imaging

Publications (1)

Publication Number Publication Date
US5128978A true US5128978A (en) 1992-07-07

Family

ID=25067566

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/763,344 Expired - Lifetime US5128978A (en) 1991-09-20 1991-09-20 Film holder for autoradiographic imaging

Country Status (5)

Country Link
US (1) US5128978A (ja)
EP (1) EP0532828B1 (ja)
JP (1) JP2500171B2 (ja)
CA (1) CA2061452A1 (ja)
DE (1) DE69219044T2 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5483076A (en) * 1993-10-08 1996-01-09 Life Technologies, Inc. Autoradiography cassette
US20040046133A1 (en) * 2002-09-11 2004-03-11 Winters William P. Phosphor plate positioning device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10346681B4 (de) * 2003-10-08 2006-02-09 Siemens Ag Film-Folien-System
US8741232B2 (en) 2012-09-05 2014-06-03 Faxitron Bioptics, Llc Specimen imaging device and methods for use thereof

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2709223A (en) * 1951-05-19 1955-05-24 Polaroid Corp X-ray cassette
US3103864A (en) * 1962-08-24 1963-09-17 Polaroid Corp Photographic film holder
US3330953A (en) * 1964-09-21 1967-07-11 Polaroid Corp X-ray film cassette for back-reflection laue exposures having film insertion and removal means
US3788205A (en) * 1972-05-12 1974-01-29 Polaroid Corp Photographic apparatus and system for processing large format, self-developing film unit
US3804625A (en) * 1972-05-12 1974-04-16 Polaroid Corp Photographic film unit cassette
US3854812A (en) * 1972-12-29 1974-12-17 Polaroid Corp Photographic processor for large format film units
US4019194A (en) * 1975-12-08 1977-04-19 Polaroid Corporation Photographic apparatus for processing large format, self-developing film unit
US4186308A (en) * 1977-10-13 1980-01-29 Polaroid Corporation Large format photographic film cassette
US4258263A (en) * 1979-12-31 1981-03-24 Polaroid Corporation Cassette for large format film unit
US4303327A (en) * 1980-11-03 1981-12-01 Polaroid Corporation Film cassette with pressure plate assembly latching system
US4542523A (en) * 1982-05-17 1985-09-17 Polaroid Corporation Radiographic intensifying screen manipulator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3579186D1 (de) * 1984-05-02 1990-09-20 Fuji Photo Film Co Ltd Autoradiographisches verfahren.
JPS62125342A (ja) * 1985-11-27 1987-06-06 Toshiba Corp Ｘ線フィルム保持装置
DE8717526U1 (de) * 1987-11-17 1989-04-06 Siemens AG, 1000 Berlin und 8000 München Autoradiographievorrichtung für Speicherleuchtstoffolien

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2709223A (en) * 1951-05-19 1955-05-24 Polaroid Corp X-ray cassette
US3103864A (en) * 1962-08-24 1963-09-17 Polaroid Corp Photographic film holder
US3330953A (en) * 1964-09-21 1967-07-11 Polaroid Corp X-ray film cassette for back-reflection laue exposures having film insertion and removal means
US3788205A (en) * 1972-05-12 1974-01-29 Polaroid Corp Photographic apparatus and system for processing large format, self-developing film unit
US3804625A (en) * 1972-05-12 1974-04-16 Polaroid Corp Photographic film unit cassette
US3854812A (en) * 1972-12-29 1974-12-17 Polaroid Corp Photographic processor for large format film units
US4019194A (en) * 1975-12-08 1977-04-19 Polaroid Corporation Photographic apparatus for processing large format, self-developing film unit
US4186308A (en) * 1977-10-13 1980-01-29 Polaroid Corporation Large format photographic film cassette
US4258263A (en) * 1979-12-31 1981-03-24 Polaroid Corporation Cassette for large format film unit
US4303327A (en) * 1980-11-03 1981-12-01 Polaroid Corporation Film cassette with pressure plate assembly latching system
US4542523A (en) * 1982-05-17 1985-09-17 Polaroid Corporation Radiographic intensifying screen manipulator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5483076A (en) * 1993-10-08 1996-01-09 Life Technologies, Inc. Autoradiography cassette
US20040046133A1 (en) * 2002-09-11 2004-03-11 Winters William P. Phosphor plate positioning device
US6881958B2 (en) * 2002-09-11 2005-04-19 Flow X-Ray Corporation Phosphor plate positioning device

Also Published As

Publication number Publication date
EP0532828A1 (en) 1993-03-24
JP2500171B2 (ja) 1996-05-29
EP0532828B1 (en) 1997-04-16
DE69219044T2 (de) 1997-07-24
CA2061452A1 (en) 1993-03-21
JPH05119416A (ja) 1993-05-18
DE69219044D1 (de) 1997-05-22

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